Compressor, pump, or the like.



B. `F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE. I APPLICATION FILED SEPT-2|.l 911'. 1,204,535. l' Patented Nov. 14,1916i I'SHEETS--SHEET l.

B. F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE. APPLICATION FILED SEPT. 2|, 1911.

1 ,204,53 5 v 1 Patented Nov. 14, 1916.

I SHEETS-SHEET 2.

' iff/6 54/ NA y B.F,AUGUST1NE.

COMPRESSOR, PUMP, OR THE LIKE.

v APPLICATION FILED SEPT-21.1911,

SHEETS-SHEET 3.

IV/YIVSSES v '.aiL-F NVENTO/f Patented Nov. 14, 1916.

B. F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE. Arrucmon min mmm. m l.

1,204,535. Patented Nov. 14, 1916.

,SHEETS-SHEET 4| 'Sy`%\f El Q nu mail un mnum. nnullnl. l l.

B. F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE.

' A v 1,204,535. Patented Nov. 14, 1911s.

SSSSSS -s EEEE 5.

Gitana,

B.' F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE. APPLICATION FILED sEPT .21. 19H.

1,204,535, l Patented Nov. 14, 1916;

7sHEETs-sHEET 6.

@foi/Immo@ I I l /MfM/v da l I aum,

B. F. AUGUSTINE.

COMPRESSOR, PUMP, 0R THE LIKE.

APPLICATION FILED sEPT.2I. IsII.

1,204,535. PaIenIeIIN0v.14,1916.

. 7 SHEETS-SHEET 7- Z'eg-lq 561 36 l I I I I I I I I I I I I I I I I I I I I I I Z la f' M' (9g '.-I'IIII ma 201 WTNESSES /VVENOR vv' l umn/M Allo-Hug' wherein the piston carrier is perfectly bal BENJAMIN' F. AUGUSTINE, OF BUFFALO, NEW YORK.

COMPRESSOR, PUMP, OB THE LIKE.

Specieation of Letters Patent. Patented NOV, 14, 1916.

. Application led September 21, 1911. Serial o. 650,616.

lTo all whom z't may concern:

Be it known that I, BENJAMIN F. Aprons- TINE, a citizen ofthe United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in- Compressors, Pumps, or the 1i-keof which the -following is a specication. l

The invention relates to new and useful improvements in rotary pumps, or compressors such as are used for pumping liquids,

compressinggases or creating avacuum or the like.

An object of the invention is to provide a rotary pump'.v or compressor having a rotated piston carrier with means'for counter-- balancing the lateral forces on the piston carrier created by the fluid passing through the pump or compressor; y Y

A. Vfurtherobject of this invention is to provide a device of the above character anced with lmeans for cou-nterbalancing the centrifugal `force acting on the radial pistons during the rotation of the carrier;

A further obj ect of the invention 'is toprovide a l'rotary compressor having a piston carrier and radial pistons with means whereby the compressing stroke'ofthe radial pistons covers a region remote from the contact point b'etweenthe carrier and the wall of the chamber.

A further object of the invention is to provide a rotary pump-or compressor with a by-pas's connecting the inlet side thereof with the, discharge side and a valve for controlling said passage together'with devices for controlling the valve whereby, when 'the demand for the fluid passing. through the pump or 'compressor ceases, the Huid inthe pump or compressor will -be causedA to circulate through the saine.

These and other objects willin part be obvious and will in part be hereinafter more abutment 2 having-an eccentrically disposed fully described. v

Inlthe drawings which .show by way of illustration one embodiment of the invention, Figure 1 is a transverse vertical sectional view through a rotary pump orl compressor embodying my improvements, saidv view -being taken centrally of the pump..4

Fig.V 2. is a longitudinal vertical sectional view centrally-through the pump or compressor. Fig: 3 is a transverse vertical sec` tion on the line 3-3 of Fig. 2. Fig. 4 is a detail perspective view showing the piston carrier, the radial pistons, the counterbalancing caps and the operating rings for the radial pistons. Fig. 5 is a detail perspective view of the abutment containing the cylindrical chamber in which the piston carrier rotates.' Fig. 6 is a detail perspective view of one of the caps which is connected to the pistoncarrier 'and'engages the outer face of .the abutment. Fig. 7 is a view taken on the line 7-7 of Fig. 2 looking in the direction of the arrow. Fig. 8 is a detail perspective view of the inner ring for one of the radial pistons. Fig. 9 is a similar view of the next adjacent ring vfor another radial piston. Fig.v10 is a detail perspective view of the neXt ad] acent ring for one of the radial pis- 'tons viewed from the. opposite side from that of Fig. 9. Fig. 11 is a view similar to Fig. 101 ofthe outer ring for the fourth radial piston. Fig. 12 isa detail showing the manner of laterally supporting 4the radial pistons,'said'\ 'ie w' showing the radial piston in end elevation. Fig. 13 is a side elevation of a portion of the abutment showing the outer face of theinlet port in full lines and the inner face thereof in dotted lines. Fig. 14

is vasection on the line 14-14 of Fig. 13. l

Fig. 15 is a vsectional detail vshowing a slightly modiiedfform of intake controlling valve which i's used more particularly in connection with the pumping of liquids.

While my device may be used for all the purposes of a rotary pump, the preferred use 1s forcompressing iiuids and I will'herein- .after in the description and claims refer to the same in a general wayas a compressor, it

ybeing understood, however, that this term is used solely for the convenience of descripand not as a limitation.

The rotary compressor consists generally of a frame or casing 1 which is provided with inlet ports and' dischargel ports controlledA by suitable valves. Said casing hasa central chamber in'which is located an cylindrical Ichamberin which is vlocated a piston carrier 3 provided with radial pistons 4, 5,46 and 7. The piston carrier is held in contact with the wall of the cylindrical chamberand the lateral strain or force of the Huid passing through the chamber. on

. the piston carrie'i" is -counterbalanced Iby caps ioo controlled by a valve which, in turn, is controlled by the pressure of the fluid at the discharge side of the compressor. A

I will now describe the various parts referred to above in detail and with particular reference to the drawings.

Casing or frame of compressor.-The casing or frame of the compressor comprises a supporting base 9 upon which is mounted the cylinder 10 which is provided adjacent each end thereof with the 'usual flanges 11. End plates 12 are bolted to the flanges ll'of the cylinder and said endplates are formed With suitable openings `13 in which are placed bearing sleeves 14 for the main shaft I 15 of the compressor. A suitable packing -16 may' be `placed; about the shaft -15 and a flanged sleeve 17 surrounding the shaft 1 5 l holds the packing 16 in place and makes a iiuid tight bearing for the rotary compres, sor. These end plates 12 are also provided on their inner faces with eccentrically disposed bearing hubs 18 which are used for maintaining the lradial pistons in proper contact with the inner wall of the abutment, as will be hereinafter more fully described.

The casing 9 is formed with an intake or inlet opening 19. A sleeve 20 is secured to the casing adjacent the` opening- 19 and:

serves as a means for directing the fluid to the intake and also as a means for supporting a valve for controlling the. intake. The frame or casing 1 on the discharge side of the compressor is formed'with a discharge openin 21 in which is threaded a sleeve 22 which 1s connected at its outer end to a receiving chamber 23. This-receiving chamber, when my deviceis used as a compres sor, serves as a storage chamberfor the compressed fiuids and a suitable pipe may be' connected with .the receiving chamber so that the iuids stored or compressed therein may be utilized. In order to maintain the compressed fluids in the receiving chamber I have provided a suitable valve .24 which willbe described more in ,detail in connection with the valve mechanism for the compressor.

The inlet side and the discharge side of the compressor arb separated from each other by a vertical wall 25 which extends from the base to the abutment 2. This separating wall 25 is formed with-a by-pass 26 which extends from one side thereof to.the other. A second by-pass 27', indicated in dotted linesl in Fig. 1, mayalso be provided, and vthese by-passes lead to a common opening in the discharge side of the compressor which opening is controlled by a valve 28 which will be hereinafter more fully described.

Abat/ment fml` piston Gamen-The abutment 2 is formed with a central cylindrical chamber 29 which is eccentrically disposed in said abutment. The outerface of the abutment is cylindrical and concentrically disposed relative to the axis of the Adrivin shaft 15. Therefore, said abutment in e fect is cam -shaped in cross section. The

abutment intermediate -its ends is formed with an outwardy extending rib 30 which is shaped so as to it tightly within the cylin-` der 10 of the compressor. The lateral strain on the abutmentis conveyed through this cylindrical rib to the walls of the cylinder. Between the rib 30 and the outer ends of the abutment said abutment is cut away so as to form a space which extends entirely face of the abutment on each side ofrthe,` central cylindrical rib 30 is formed with a series of pockets or "chambers 31 (see Fig.' 5). These pockets arel separated from each other by ribs 32 which extend longitudinally of the abutment and as herein shown said ribs, extend to a point adjacent 'the outer ends of the abutment. Each of the pockets is closed at its 'outer end by "fa cir'f cumferential rib v32n which. prevents any leakage from the pockets at the ends of thel abutment. Each pocket or chamber 31 is' ment may pass through the ports 33 andyA lill the chamber or pockets 31 in the outer face lof the abutment. The combined area of the'pockets or chambers 31 formed in the outer'face of the abutment is substan`v tially thesame as the area of the outer face yof the rotating piston carrier. This abutment 2, as' above noted, engages the upper end Aof the vertical dividing wall 25 and completes the separation of the inlet side ios ` of the vcompressor from the discharge side thereof so that the iiuid passing through the 1 compressor must pass through the cylmdri cal chamber in the abutment.' .The Huid passing through the compressor is delivered to the cylindrical chamber vthrough the illlet ports located centrally between the ends of the abutment. The cylindrical rib 30 of the abutment is formed with a circumferentially disposedslot 34. This slot has substantially the same vwidthhthroughoutits length and extends from a point'adjaoent. v

the vertical wall 25 to a point 35 which is vwell above the center of the main shaft 5.

On its inner face the abutment is formed with a plurality of slots 36, 37 and 38. slots 36, 37 and 38 are preferably arranged side by side and extend in va circumferential the same width as the rib portion o f the abutment and said abutment is cut away Vfrom the inner sides of the outer edges as indicated at 39, Fig. 14, to the inner sides of the edges of the slot 34.

Between the vertical separating *wall 25 and the outer-wall of the compressor on the discharge side thereof is a -chamber 40 which .*eated in the body of the piston carrier are Ais connected with the receiver and this chamber I have termed the main compression chamber. Said main compression chamber lis connected with thecylindrical chamber in the ,abutment by an outlet ondischarge port 41 which is similar in construction to the in# let port 34. v This discharge port consists'of a circumferential slot in the outer face'of` the abutment extending from the vertical wall to a point 42 which is wellabove i. the center ofthe cylindrical chamber. The

lals

inner face of the abutment' is provided with a plurality of slots 43, 44 and 45 which are similar to the slots 36, 37. and 38. `These slots 43, 44 and 45 are connected with the ldischarge port 41 in the same manner as the connection between the slot 34 and the slots 36, 37 and 38.; It will be apparent, therefore, that the fluid drawn in throughthe inlet ports may be conveyedthrough the cylindrical chamber to the discharge ports, thence to the vmain compressio-nfchamber and fromv -ceiver.

with a series of recesses 46 in which are lo-V cated headed packing o-r wea'r blocks 4.7'.l

thev mainA compression chamber to the re- Thepabutment 2'is also provided These blocks are springs 48. l v 4 'Piston cargzierand radialpstonal- The piston carrier 3 has ka body portion 49I which is'cy'lindrical in form' and is fixedly attached tothe main shaft 15 so that as said main shaft-is rotated from any Asuitable source of po-wer, .the p forced outwardly vby tioned that' the outer face ythereof is in run ning contactA with tle wall-of the cylindrical chamberf29' in the abutment 2.y .Rigidly secured at each end ofthe body portion 49v of the piston carrier; are'end Vplates 50 which projectbeyo-nd the-outer surface of the-body portionl 49. These. end, plates form.` flanges which embrace the endwalls oftheabutment/2. `Said. flanges areypreferably so proistonvcarrier will be rotated thereby.\. Th1s piston carrier 1sso. proporradial guide-ways 53 which are adapted to receive the radial pistons 4, 5, 6 and 7 These guide-ways in the body portion of the piston carrier also extend into the end plates 50 and to the'outer edge of the flanges of said plates. The radial pistons also extend through the end plates to the outer faces thereof. -The radial guide-ways in the end plates 50 are` enlarged asshown at 54 anda vward` 'against thev wall of the `cylindrical portioned as to liesubstantially flush with the outersurface of the ribs 32'4 and '32a on theabutment Inv order to form' a' seal be. tweenthe end wall oftheabutment and the end flanges, Ifh'ave provided lthe abutment with a circumferential recess-51 in which is located a ring 52 which ring is preferably ofv metal andis forced outward by any suit- -v eo vend plates forming the able means so'as to forcibly contact with thesidewalls ofthe projecting flanges 50. xflhese made detachable from the bodyof the vpiston carrieror one of said endplates may bev integral with the piston carrier and the other detachable as shown in Figs. 2 and 4. Lo-

flanges may be` v chamber 29 and serve to form a proper sealing contact between the vradial piston and the wall ofthe chamber. Said radial pistons are held constantly in contact with the'wall of the cylindrical chamberbyrings which are connected' to the eccentric hubs 18 as will be hereinafter `more fully described.

Comterbalancng ,caps `for-.gomma car- I rien-Located at each end of the piston carrier isf a cap 8 which is in the form of a sleeve having an end wall by which the sleeve .oricap may be secured to theend plates 50 of the piston carrier. These caps extend over the flanges of the end plates and over the outerlface of the abutment2 asclearly shown inv Fig. 2; l vrlhe caps are preferably so .proportioned as tov have a smooth running contact withlthe outer faces of the lribs 32. The inner ledges of the caps are formed with a projecting rib 61 which engages grooves 62 formed in the cylindricalrib 30 in the abutment' 2. This rib and grooveconnection between the caps and the abutment serves to form, a sealing joint between the vcaps and theabutment and preventsleakage fof the fluid in the pockets or chambers inthe outer face of the abutment. The caps are also so proportioned as to have a smooth running fit with the inner surface of the cylinder. Inasmuch asthe caps overlie the chambers or ment they will be su jected to the pressure of the fluid in said chambers. Also, as these Acaps are rigidly connected t6 the piston carrier, any lateral force against the caps will be transmitted to the piston carrier. It w1ll readilybe seen, therefore, that the lateral `forces of the fluid passingthrough the comfpressor will be directedifagainst the rotating piston carrier and also, through the ports 33 and `.the chambersin the outerface ofl the ockets 31 in the abutabutment,said` lateral forces will be directed 130 against these caps which are connected to the rotary piston carrier'. Inasmuch as the combined area of the chambers in the outer face of the abutment is substantially the same as the area of the cylindrical face of the piston carrier, and furthermore, as thev lateral force against the caps is in an opposite direction from that against the rotating piston carrier, it will be seen that these lateral forces will counterbalance each other and that there will be substantially no lateral force of the piston' carrier againstits bearings. When a' radial piston passes the inlet ports and creates a vacuum the lateral suction force on the piston carrier will be offset by the lateral suction force on the caps connected to the, 'piston carrier. When a radial piston is compressing a fluid in advance thereof, the lateral forces of the Huid exerted against the piston carrier will be likewisel exerted against the caps and again said lateral forces will be opposed and counterbalanced. By my construction wherein a series of pockets or chambers are used and a separate 'port is connected to each chamber, one chamber after another will be thrown into action as the piston carrier rotates and thereby the area on the caps exposed to a given lateral force will be kept substantially equal to the area of the surface on the carrier exposed to said lateral force. The lateral forces on the rotary carrier will, therefore, bey perfectly counterbalanced during-.the entire rotation of the same. i v

Counterbalanong devices fovrmolz'al pistons.-The radial pistons are held in -running contact with the wall of the cylindrical' chamber as above noted by the eccentric hubs 18 at each end of the compressor. Each radial piston is provided with a stem 63 at each end' which extends through ,a radial slot 64 in the caps 8. These stems are preferably rectangular in cross section and fit within cylindrical bearings 65, The bearing 65 for one of the radial pistons is mounted in a lug 66 carried by a ring 67: The bearing 6.5 for another radial piston is mounted in aflug 68 attached to a ring 69.l The ring 69 is formed with a collar 70 which extends on each side thereof. (See Fig. 2.) The ring 67 `fits on said collar 7 0 while the collar 70 fits on the eccentric hub- 18. The

bearing 65 `of another radial piston is mounted in a lug 71` connected to a.ring 72 which ftsonthe collar 70 and the fourth radial piston is connected to a bearing 65 mounted in, a lug 73connected to a ring 74 which also lits-on the `collar 70. As the piston' carrier"4 rotates, these rings will be,

e will be heldV in v81 in the sleeve 20.

on one radial piston through the collar 70 will be offset or counterbalanced by the centrifugal force acting upon the oppositely disposed radial piston. By this overcoming of the centrifugal force operating upon the radial pistons I avoid any great wear `be- 'tween the radial istons and the wall of the cylindrical cham er. Said pistons are so constructed as to havel a smooth runnmg aoI contact with this wall and regardless of the speed ofthe com ressor said radial pistons y ree' Arunning contact with the lwall'. u

Valve mechanism for compressor-While my rotary compressor, as above noted, may be used forpumping liquids or for other similar purposes, it is especially adapted for compressing fluidsv such as a mixture ofair and gas which may be utilized in connec tion with a combustion'engine. Inorder to properly'control the supply of air and gas I have provided the inlet port 19 with a controlling valve 75. This valve is formed cone shaped and engages a cone sha ed seat in the sleeve 20'. The valve stem 6, con- ;nected to the valve 75, extends through the outer end 'of the sleeve 20 and slides freely inl the closedend of the sleeve. 77 engages lugs 78 projecting inwardly from 10o A sprmg the sleeve 20 at one end and engages a collar 79 on the 'valve stem 76 at its votherend. This spring normally holds the valve closed.

-The suction stroke, however, of the com pressor will open the valve and draw through the inlet port 19 the lfluid which is to be compressed; At the bottom of the sleeve 20 is.- anv opening 8O through which air may pass to the inlet port 19-when the valve 75 is open. At the upper face of the sleeve are a plurality of ports 81 leading to, l

a chamber 82 which is connected to the supply pipe 83. A liquid fuel such as gasolene, for example, may pass through pipe 83 to the chamber 82. A piston valve 84 normally closes the ports 81. Said "piston valve is formed withla vplurality of ports 84 which may b e brought into'register with the ports Theseports in the valve are differently spaced relative tothe ports in the sleeve so that as the valve slides first one port and then v'another will. be opened and by varying the size of said ports I am able ,to gradual y open the valve and gradually increase the supply ofliquill` fuel.

The piston valve 84 is connected to the valve stem 76 of the valve 75 by a plate or link 85. This plate or link is4 located -between tire exposed surface of the piston 93. The

' be opened a little farther and the proper proportion of liquidiuel given tothe com-v .nutsjhreaded on to the end of the piston valve and also between nuts threaded on to the end of the valve stem 76. By adjusting these nuts the position of the piston 'valverelative to the valve 75 may be adjusted. In

the rotation of the piston carrier on the first part of the suction stroke the valves 75 .and 84 will be opened slightly if the piston carrier is-rotating slowly and a small amount of air andliquidfuel drawn in through the port 19. The air and the liquid fuel will be intermixed and delivered to the discharge side of the compressor where it will be compreed and delivered to the receiver. Upon an increase of the suction stroke so that an increased amount ofv air is drawn in, the valve which controls the liquid fuel will Ashaped seat vin the sleeve 22. A spring 86 is seated on an inwardly projecting lug carried by thesleeve 22 at one end and at its separating wall 25 to the inlet side ofthe compressor. This spring can be adjusted so that when Aa desired .degree of compression is obtained in the receiver the valve will automatically shift so as to connect the delivery side of the compressor with the inlet side thereof and said compressor may continue to rotate causing the 'luid contained therein to circulate in the compressor with no waste whateverof the fluid. When the by-pass is opened by the shifting of the valve 28 the suction will not of course be sucient Ito. open the valve 75 and therefore no further Huid will bel drawn into the compressor and thecirculation noted above takes place.

' :.When my rotary compressor is used ,purely as a pump for delivering a liquid, the formof the valves may be' slightly changed if desired. InFig. 15 I have'shown a modified forml of 'the inlet controlling valve which is specially adapted for use when pumping liquids. It is obvious, however,

that the lvalve shown in Fig. 1 may be used for pumping liquid if desired. In this valve other end said spring engages a collar 87 /mechanism shown in Fig.'15 the sleeve 97 carried by the valve stem 88. Said valve stem passes throughv a spider at its outer end which properly guides the valve so that the compressed fluid in the main compression chamber will open the valve 24 and pass into the receiver 23.

The by-pass 26 1s controlled -as above noted by'av valve 28. VThe sleeve 89I is 1n.

serted in thel opening through the vertical wall 25 and said sleeve is formed with a seat against which theI cone shaped valve rests. A spider 90 is carried by the sleeve 89 and provides a bearingA for the stem 91 lof the valve 28. A spring 92 encircles the stem 9 1 and at one end bears against the spider whlle at the -other end said spring bears against a piston 93 rigidly carried by the end of the valve stem 91. Thispisf ton slides in a small cylinder 94 securedto the end of a sleeve 89 by suitable bolts 95. A pipe 96 connects the receiver 23 with the outer end of the cylinder 94 so `that the space between the piston93- andthe head of the cylinder is subjected to preciselytthe same Huid pressure as the receiver 23; The

` piston head 93 in area is slightly greater than the area of the valve 2&8 so `that the fluld preurev against the lentlre valve 28 is less than the Huid pressure against. the en'- spring 92, therefore, serves to hold the valve 28 closed. When the pressure of the fluid .in the receiver 23 reaches a point so that the pressure lagainstthe lpistonv 93 exceeds lar to' the valve 75 and is`held normally closed by the spring 101. -In connection with the pumping of liquids the receiver 23 may be slightly changed so as to become a compressed-air chamber for giving a uniform head to the liquid 'passing through the pump or compressor. y

Operation-The piston carrier may be ro" tated as above noted from any suitable source` of power. As this carrier rotatesv the radial pistonsare held in running Contact with. the wall of the cylindrical chamber through the eccentric bearing hubs coperating with the rings which are in turn connected to the radial pistons. Through the connection of these rings the centrifugalforce acting on one radial piston will be counterbalanced by the centrifugal force acting on the oppositely disposed radial piston drawn in will of course depend entirely upon the use to which my compressor is put. This fluid drawn in by the radial piston as it continues its forward movement will be tra ped between the same and the next succee in piston and conveyed to the other side o the compressor where it is delivered to the compression chamber'and inall to the receiver. The compression of the drawn in by one radial piston' is accomplished by the nextsucceeding piston. Considering the parts as positioned in Fig. l the radial piston 7 is just about to complete its compression stroke u on the fluid in advance thereof. The Huid has been forced by the movement of the radial piston through the outlet port-s 43; 44 and 45 into the main compression chamber 40. By the term forced I do not mean however that the fluid is rushed through the po-rts as these ports 48, 44 and 45 are relatively large and the space in advance of the radial piston 7 in the cylindrical chamber and the slots 1n the abutment together withth-e main com-V pression chamber all form substantially one compression chamber in which the .fluid is being compressed. These outlet ports 43, 44 and 45, leading to the main compression chamber, extend to a point above the center of the compression chamber and as soon as the radial piston 7 reaches the u'pper ends of the outlet ports the space between the'radial I pistons 4 and 7 will at once be connected with the space between the radial pistons 6 and 7 and also with the main compression chamber. Therefore, the` ressure oneach side of the radial piston'7 will be equalized and this piston may be lconsidered an idler so far as its action on the'fluid is concerned until it passes by the inlet orts on the other side of the compressor an again draws 1n the fluid l to be compressed. As soon as the piston 7 becomes an idler the piston 4 at once begins to compress the uid in advance thereof and forces the same down into the main 4compression chamber. By this construction wherein thel outlet ports extend to a point well above the center of the chamber it will be seen that the compression" stroke of the radial piston covers a region extending from 4 the point A to the point B which is the portion of the cylindrical-chamber thaty 1s substantially opposite the wall of the abutment.

In this'region of the compressor all parts of the wall of the carrier are substantially equally spaced from the outer wall of the `chamber and, therefore, little or nocompression of the fluid is caused b the conformation of theI chamber in w ich the piston..

moves, but the compression of the fluid is brought about almost solelv by the forward movement of the radial piston forcing lthe uid into the main compression chamber thus' ettin'g in effect the compression accomphshed by the right line movement of uid f another there will be a succession of operations which are in effect the same as a continuous right line movement of the piston. It will be 'apparent therefore, that in the compression of the fl loss of power due to friction or varyin compression .on the fluid. In other wor s, although use a rotating carrier having a radial piston, which r'otatin carrier `is eccentrica ly\ disposed in a cylindrical chamber, I am able to obtain a re ular constant compression force upon the uid.

As above noted, when the compression in the receiver reaches a predetermined point the valve 28 controlling the by-pass will 'lol uid there is little or noy be opened and the fluid in the compressor` w11l be caused to circulate in the compressor passing from the delivery side thereof to the inlet side and no further drawing in of fluid will occur while said valve is open and nelther will there be any loss of the comv `the fluid drawn in and forces it through the cylindrical chamber and out of the delivery side of the compressor.

In my construction wherein the inlet and delivery ports in the abutment extend well above the center of thecylindrical chamber,

va considerable portion of ythe rotating piston carrier will be subjected to the lateral strains .or forces in the fluid being compressed. Thls lateral strain on the rotating carrier will be, however, perfectly counterbalanced by the'opposing force of the compressed fluid. on the caps which are con.

nected to the rotating carrier as has been above described. Furthermore, the fluid passing out through the ports in the abutment into the chambers in the-outer surface of the abutment will form between the outer surface of the abutment and the caps a fluid joint which will tend to cause the caps and the carrierconnected thereto to float or run freely on this fluid joint and all lateral strain on the driving shaft is avoided. It

will thereforebe seen that I have 4provided,

a means whereby a ortion of the force of the compressed ui may be utilized to counterbalance all of the objectionable lat eral forces or strains on the driving shaft.v Furthermore,` these caps engaging the outer.

face of the abutment will embrace the abutmentlon one side while the rotating piston carrier at its ointlof contact with the wall of the cylin rlcal chamber embraces tlie abutment, on the opposite side. -The Huid pressure against the cap will therefore tend to' maintain said rotating piston carrier in between the rotatable member and the cylin- 4proper running contact with the wall of the drical chamber, said inlet port extending cylindrical chamber. I'prefer to provide the 4trom said point of Contact to a point above .,wall of the cylindrical chamber with a' series the axis of said rotatable member, said of longitudinal'grooves 101a and also to propoint of contact being arranged between vide the abutment with a series of grooves said inlet and outlet ports, and means to 101. These grooves are short and are stag-v automatically control the supply' of Huidv gered and serve to form an eective seal to the compression chamber. to prevent the escape of the fluid from the 4. A rotary compressor including, in comdelivery side of the compressor to the inlet binatioma casinghaving a cylindrical chamside of the compressor.

It is vobvious that minor changes of the construction and arrangement of parts may be made without departing from the spirit of my invention as set forth in the appended claims. What I claim is:

1. A rotary compressor including in com- I bination a casing having a cylindrical chamlao rotatable member.

sion chamber, andan inlet port located on the opposite side of the point of. contact ber therein, a rotatable member mounted in between the rotatable member and the cysaid chamber andhaving contact with the ,lindrical chamber, said inlet and outlet wallof the chamber, a radial piston mountports extending from said point of contact ed on said rotatable member, a compression to a point above the axis of said rotatable chamber located adjacent the under side of member.

the cylindrical chamber, the latter having a port connecting it with the compression chamber, andan inlet port. located on the opposite sid'e of the point of contact be- 5. A rotary compressor including, in combination, a casing having a cylindrical chamber therein, a rotatable member mounted in said chamber, said rotatable member havtween the rotatable member and the cylining contact with lthe wall of the chamdrical chamber, said point of contact be-v bel', radial pistons mounted on said rotatween the rotatable member and the cylintable member, a compression Chamber, said drical chamber being arranged between said cylindrical chamber having an outlet port inlet and outlet ports, one of said ports ex-t connecting saidchamber with the compres- `tending from the point of contact between sion chamber, and an inlet port located on the rotatable member and the cylindrical the opposite side ofthe point of contact bevchamber to a -point above the axis of the 'tween the rotatable member and the cylindrical chamber, said inlet and outlet'ports 2. A rotary compressor including in comextending from said point of contact to a bination, a casing, an abutment located point abovethe axis of sa1d rotatable memwithin said casing and having a cylindrical ber, said lpoint of contact being arranged bech'amber therein, a rotary carrier. within tween said inlet and outlet'ports.v saidv abutment, said carrier having contact with the wall of the abutment, radial pisbination, a casing havinga cylindrical cham'- tons mounted on said carrier, a compression bertherein, a rotatable member mounted in chamber, said abutment having an -outlet said chamber, sa1d rotatable member havport connecting the chamber therein with ing contact with the wall of the l chamsaid compression chamber,.and an inlet port ber, radlal plstons mounted on sa1d rota` located on the opposite side of the point of table member, a com ression chamber, said contact between the carrier and the abut4-v cylindrical chamber avlng an outlet port. ment, said inlet port extending from said. connecting sa1d chamber with the comprespoint of contact to apoint above-the axis of sion chamber, and an inlet port located on said carrier, said pomt of contact between the opposite side of the point of contact the carrier and the abutment being located between the rotatable member and the cybetweensaid inlet and outlet ports.

bination, acasing having'a cylindrical chamto a point above the axis of said rotatable ber therein, a rotatable member mounted in member, said point of contact being arsaid chamber, 'said rotatable member havranged between said inlet and outlet ports, ing 4ontact with the wall of the chamand means connecting said pistons to counber, a radial piston `mounted on said rotaterbalance one by the other. f table member, a compression chamber, said 7 A rotary compressor including, in com,- cylindrical chamber having an outlet port bination, acasing having a cylindrical chamconnectin said chamber with said compresber therein, a rotatable member mounted in sion chamg'ber, and an inlet port located on said chamber, said rotatable `member ha vlthe opposite side of the point of contact ing contact with the wall .of the chamlindrical chamber, said inlet and outlet 3. A rotary compressor including, in comports extending from said point 'of contact 6.- A rotary compressor including, in comi ber, radial pistons mounted on said rotatable member, a compression chamber, said cylindrical chamber havingan outlet -port connecting said chamber with said compression chamber and an inlet port located on the opposite side of the point of contact between the rotatable member and the cylindrical chamber, said ports extending from said point of contact to a point above the axis of said rotatable member, means for rotating said rotatablemember to force a fluid through the compression chamber, and means for utilizing a portion of said compressed fluid for counterbalancing the lateral force of the compressed luid on the K rotatable member.

p a fluid through izing a portion of said corn- 8. A rotary compressor including, in combination, a casing having a cylindrical chamber therein, a rotatable member mounted in said chamber, said rotatable member having contact with the wall of the chamber, radial pistons mounted on said rotatable member, a compression chamber, said cylindrical chamber having an outlet port connecting said chamber with said compression chamber, and an inlet portlocatedon the opposite side of the oint of contact between the rotatable mem er and the cylindrical chamber, said ports extending from said point of contact to a point above the axis of said rotatable member, means for rotating said rotatable member to force the compression chamber, means for uti pressed fluid for counterbalancing the lateral force of the compressed fluid on the rotatable member, andmeans for counter balancing the centrifugal force on said pistons.

9. A rotary compressor including in combination, a casing having a cylindrical chamber therein, a rotatable member mounted in said chamber, said rotatable member having contact with the wall of the chamber, a

radial piston mounted on said rotatable' member, a compression chamber, sa1d,cyl1n drical chamber having an outlet port connecting said chamber with said compression chamber, and an inlet port located on the opposite side of the point of contact between the 'rotatable member and the cylindrical chamber, said inlet port extending from said point of contact to a point above the axis of saidl rotatable member, said (point of' contact being arranged between sai inlet and outlet ports.

10.l A rotary compressor including in combination a casing having a cylindrical chamber therein, a rotatable member mounted in said chamber and having contact with the wall of the chamber, a radial piston mounted on said rotatable member, a compression chamber located adjacent the under side of the cylindrical chamber, the latter having a port connecting it with the compresslon chamber, and an inlet port located on thel opposite side of the point of contact between the rotatable member and the cylindrical chamber, said point'of contact between the.

ed on said rotatable member, a compression chamber located'adjacent the under side of the cylindrical chamber, the latter having a port connecting it with the compression chamber, and an inlet port located on the opposite side of the point of contact between the rotatable member and the cylindrical chamber, said point of contact between thel rotatable member and the cylindrical chamber being arranged between saidl inlet and outlet ports, one of saidports extending from the point of contact between the rotatable member and the cylindrical chamber to a point above the axis of the rotatable member, and a valved by-pass'between the compression chamber and the inlet Iside of lthe cylindrical chamber.

12. A rotary compressor including in combination a casing having a cylindrical chamber therein, a rotatable member mounted in said chamber andhaving contact with the wall of the chamber, a radial piston mounted on said rotatable member, acompression.

chamber located adjacent the under side of the cylindrical chamber, the latter having a port connecting it with the compression chamber, and an inlet port located on the opposite side ofthe point of vcontact between the rotatable member and the cylindricalchamber, said point of contact between the rotatable member and the cylindrical chamberbeing arran ed between said inlet and outlet ports, sai inlet and outlet ports extending from the point .of contact between Y the rotatable member and the cylindrical tatable member.

ln testimony whereof I ,ax my signature in presence of two witnesses.

BENJAMIN F. AUGUSTINE. Witnesses:

JOHN H. SiGGEBs, E. C. Turn. l Y

. chamber to a point above the axis of the ro- 

